Annotations dropped if annotation property is undeclared #875
Description
Example ontology:
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix oio: <http://www.geneontology.org/formats/oboInOwl#> .
@prefix obo: <http://purl.obolibrary.org/obo/> .
# omitting this line loses the axiom annotation in roundtrip
oio:source rdf:type owl:AnnotationProperty .
obo:MONDO_0009025
a owl:Class ;
oio:hasDbXref "UMLS:C1415737" .
[ a owl:Axiom ;
oio:source "MONDO:notFoundInSource" ;
owl:annotatedProperty oio:hasDbXref ;
owl:annotatedSource obo:MONDO_0009025 ;
owl:annotatedTarget "UMLS:C1415737"
] .this example roundtrips OK. However, if the AP declaration is removed, then the axiom annotation is silently lost.
This seems odd. Either the OWLAPI needs declarations to be present, or it should infer the types of undeclared properties. If the latter, then it should do this consistently whether parsing plain triples or axiom annotations